package todo.core.dao;

import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.LockMode;
import org.springframework.context.ApplicationContext;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import todo.core.domain.Todo;


/**
 * A data access object (DAO) providing persistence and search support for Todo
 * entities. Transaction control of the save(), update() and delete() operations
 * can directly support Spring container-managed transactions or they can be
 * augmented to handle user-managed Spring transactions. Each of these methods
 * provides additional information for how to configure it for the desired type
 * of transaction control.
 * 
 * @see dmc.todo.domain.Todo
 * @author MyEclipse Persistence Tools
 */

public class TodoDAO extends HibernateDaoSupport {
	private static final Log log = LogFactory.getLog(TodoDAO.class);
	// property constants
	public static final String TITLE = "title";
	public static final String DESCRIPTION = "description";
	public static final String COMPLETE = "complete";

	protected void initDao() {
		// do nothing
	}

	public void save(Todo transientInstance) {
		log.debug("saving Todo instance");
		try {
			getHibernateTemplate().save(transientInstance);
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			throw re;
		}
	}

	public void delete(Todo persistentInstance) {
		log.debug("deleting Todo instance");
		try {
			getHibernateTemplate().delete(persistentInstance);
			log.debug("delete successful");
		} catch (RuntimeException re) {
			log.error("delete failed", re);
			throw re;
		}
	}

	public Todo findById(java.lang.String id) {
		log.debug("getting Todo instance with id: " + id);
		try {
			Todo instance = (Todo) getHibernateTemplate().get(
					"todo.core.domain.Todo", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(Todo instance) {
		log.debug("finding Todo instance by example");
		try {
			List results = getHibernateTemplate().findByExample(instance);
			log.debug("find by example successful, result size: "
					+ results.size());
			return results;
		} catch (RuntimeException re) {
			log.error("find by example failed", re);
			throw re;
		}
	}

	public List findByProperty(String propertyName, Object value) {
		log.debug("finding Todo instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from Todo as model where model."
					+ propertyName + "= ?";
			return getHibernateTemplate().find(queryString, value);
		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}
	}

	public List findByTitle(String title) {
		return findByProperty(TITLE, title);
	}

	public List findByDescription(String description) {
		return findByProperty(DESCRIPTION, description);
	}

	public List findByComplete(String complete) {
		return findByProperty(COMPLETE, complete);
	}

	public List findAll() {
		log.debug("finding all Todo instances");
		try {
			String queryString = "from Todo";
			return getHibernateTemplate().find(queryString);
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}

	public Todo merge(Todo detachedInstance) {
		log.debug("merging Todo instance");
		try {
			Todo result = (Todo) getHibernateTemplate().merge(detachedInstance);
			log.debug("merge successful");
			return result;
		} catch (RuntimeException re) {
			log.error("merge failed", re);
			throw re;
		}
	}

	public void attachDirty(Todo instance) {
		log.debug("attaching dirty Todo instance");
		try {
			getHibernateTemplate().saveOrUpdate(instance);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public void attachClean(Todo instance) {
		log.debug("attaching clean Todo instance");
		try {
			getHibernateTemplate().lock(instance, LockMode.NONE);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public static TodoDAO getFromApplicationContext(ApplicationContext ctx) {
		return (TodoDAO) ctx.getBean("TodoDAO");
	}
}